Abstract
Aim
This study aimed to describe trends in CP prevalence among children born between 1988
and 2007 in Okinawa, Japan.
Method
This study was conducted during two time periods, Period I (from 1988 to 1997) and
Period II (from 1998 to 2007), using data from the local CP registration system. We
assessed cerebral palsy gestational age and birth weight specific trends in prevalence
and analyzed these with Poisson regression analysis.
Results
Overall crude CP prevalence was 1.88 per 1000 live births. Approximately 70% of children
with CP were born preterm or with low birth weight (LBW).
Overall CP prevalence increased in Period I and decreased significantly in Period
II (P < 0.05). Additionally, CP prevalence among children born with a birth weight between
1000 and 1999 g increased in Period I and decreased significantly in Period II (P < 0.05). A significant decrease was found among the children born between 1995 and 2007
with a gestational age between 28 and 31 weeks (P < 0.01).
Conclusions
There was a decrease in CP prevalence from 1998 to 2007, especially among LBW children
and preterm infants. The high CP proportions among LBW and preterm infants are unique
features of the population of Okinawa, Japan.
Keywords
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Article info
Publication history
Published online: April 09, 2016
Accepted:
March 18,
2016
Received in revised form:
March 17,
2016
Received:
November 24,
2015
Identification
Copyright
© 2016 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.
